Estimating optical feedback from a chalcogenide fiber in mid-infrared quantum cascade lasers

L. Jumpertz; C. Caillaud; C. Gilles; S. Ferré; K. Schires; L. Brilland; J. Troles; M. Carras; F. Grillot

doi:10.1063/1.4964494

journal article·2016-10-01Open access

Estimating optical feedback from a chalcogenide fiber in mid-infrared quantum cascade lasers

L. Jumpertz, C. Caillaud, C. Gilles, S. Ferré, K. Schires, L. Brilland, J. Troles, M. Carras, F. Grillot

AIP Advances· Volume 6· Issue 10

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Source abstract

Abstract

The amount of optical feedback originating from a chalcogenide fiber used to couple light from a mid-infrared quantum cascade laser is evaluated experimentally. Threshold reduction measurements on the fibered laser, combined with an analytical study of a rate equations model of the laser under optical feedback, allow estimating the feedback strength between 11% and 15% depending on the fiber cleavage quality. While this remains below the frontier of the chaotic regime, it is sufficient to deeply modify the optical spectrum of a quantum cascade laser. Hence for applications such as gas spectroscopy, where the shape of the optical spectrum is of prime importance, the use of mid-infrared optical isolators may be necessary for fibered quantum cascade lasers to be fully exploited.

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Research context

OpenAlex topics: Spectroscopy and Laser Applications · Semiconductor Lasers and Optical Devices · Photonic and Optical Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Université Paris-Saclay 1 Télécom ParisTech, , 46 Rue Barrault, 75013 Paris, France

2MirSense, 8 Avenue de la Vauve, 91120 Palaiseau, France

Université Rennes 1 3 Equipe Verres et Céramiques, ISCR UMR-CNRS 6226, , 35042 Rennes Cedex, France

4Thales Reasearch & Technology, Route Départementale 128, 91767 Palaiseau, France

5SelenOptics, 263 Avenue du Général Leclerc, 35042 Rennes Cedex, France

University of New-Mexico 6 Also with Center for High Technology Materials, , 1313 Goddard SE, Albuquerque, New Mexico, USA

Funding

Direction Générale de l'Armement

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